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Resolve neighbors using longest prefix match. Although interface ranges
should not generally collide, it may happen for unnumbered links.
Thanks to Kenth Eriksson for the bugreport.
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Protocol can have specified VRF, in such case it is restricted to a set
of ifaces associated with the VRF, otherwise it can use all interfaces.
The patch allows to specify VRF as 'default', in which case it is
restricted to a set of iface not associated with any VRF.
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Simplify neighbor cache code, fix several minor bugs, and improve
handling of ONLINK flag.
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Actually much simpler than expected.
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The patch adds support for channels, structures connecting protocols and
tables and handling most interactions between them. The documentation is
missing yet.
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Explicit setting of AF_INET(6|) in IP socket creation. BFD set to listen
on v6, without setting the V6ONLY flag to catch both v4 and v6 traffic.
Squashing and minor changes by Ondrej Santiago Zajicek
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Squashing and minor changes by Ondrej Santiago Zajicek
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Use net_addr for interface address prefixes, support net_addr in
configuration parser.
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And some minor fixes.
Thanks to Sergey Popovich for the patch.
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When there are overlapping IP prefixes and one disappears,
neighbors associated with it was removed even if there
is another covering IP prefix.
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Allows using NEF_STICKY neighbors with link-local addresses. This is
used for static route nexthops, they can be specified like fe80::1%eth0
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Thanks Matthias Schiffer for the bugreport and the original patch.
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Mainly changes IA_UNNUMBERED to IA_PEER and adds IA_HOST. Also do not
show broadcast addr in show interfaces. Nobody cares for that.
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- BSD kernel syncer is now self-conscious and can learn alien routes
- important bugfix in BSD kernel syncer (crash after protocol restart)
- many minor changes and bugfixes in kernel syncers and neighbor cache
- direct protocol does not generate host and link local routes
- min_scope check is removed, all routes have SCOPE_UNIVERSE by default
- also fixes some remaining compiler warnings
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Finally, it is working.
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The core state machine was broken - it didn't free resources
in START -> DOWN transition and might freed resources after
UP -> STOP transition before protocol turned down. It leads
to deadlock on olock acquisition when lock was not freed
during previous stop.
The current behavior is that resources, allocated during
DOWN -> * transition, are freed in * -> DOWN transition,
and flushing (scheduled in UP -> *) just counteract
feeding (scheduled in * -> UP). Protocol fell down
when both flushing is done (if needed) and protocol
reports DOWN.
BTW, is thera a reason why neighbour cache item acquired
by protocol is not tracked by resource mechanism?
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neighbor->scope now contains proper address scope which is zero (SCOPE_HOST)
for local addresses, higher (SCOPE_LINK, ..., SCOPE_UNIVERSE) for remote ones.
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Introduced neigh_connected_to() to serve the same purpose efficiently.
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several debug() calls converted to DBG().
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